Roofing joint



Aug 6, 1929' E. J.HAYM AN 1,723,166

ROOFING JOINT Filed Feb. 25, 1929 INVENTOR.

ATTORNEYS- Patented Aug. 6, 1929.

. .UNITED STATES EBEE J.. HAYMAN, OF- PARKEBSBURG, VIRGINIA.

fROOFING JONT.

Application filed February 25, 1929. Serial No. 342,471.

Figure l is a cross sectional view ot one form ofthe root joint.

Fig. 2 is a side view of the parts shown in Fig. l.

Fig. $3 isa view of the inner side ot the joint, being substantially a view on section line of Fig. l, looking'in the arrow direction.

Fig. 4 is a cross sectional view of another form et the invention in which a closing cap is used between the two sections of the roof.

Referring first to Figs. l, 2 and 3, A and B are adjacent roof sections. At l the section A has an upstanding wall, which is provided with a return bent portion 2, extending down from the upper edge of the upstanding wall at a divergent angle.

rl`he other section B also has an upstanding wall and a return bent portion 4. This covers or overlies the return bent wall ot the section A. It has protuberances 5 struck .out therefrom so as to project on the inner side. These protuberances do not break 'through the wall, but on the contrary the wall is intact throughout and is continuous with the main wall portion ot the flange or return bent portion. These protuberanees form the locking means between the covering wall or flange 4 of the section B and the underlying return bent portion ot the section A. These 'flanges or return bent portions are resilient and when the covering wall 4 is pressed downwardly relative to the underlying return bent portion of section A, the protuberances will snap under the edge of the underlying return bent portion and thus the covering wall will be locked to the underlying` return bent portion or flange of section A.

Because the wall of the protuberance is continuous throughout and is continuous with the wall et the return bent portion or flange, the weather will be excluded from the interlocked parts and rusting will be prevented.

It is desirable to prevent the elements interlock but to adjacent surfaces, by reason oi rust accumulations.

rllie protuberance is of special shape in that its lower' point ot juncture with the main body of the wall ot the flange is along a straight line as indi ated at i The contigui-ation above this base li e is t rat oi an arch, and on the top of this arch the flange or return bent wall rests at the point a, the contact here being` what might be termed substantially a line contact, because the arched formation slopes away from this point ot' contact at either side. Viewed in section, as in Fig. l, the projection presents a substa. an. abrupt shoulder at the point ci, with a slightlf curved inner end at Zi, and a downwardly and outwardly inclined wall at c merging into the body ot the flange.

By reason oi this Vformation, the parts, after being interlocked, readily can be slid relative to each other by a` movement in the direction .of the longitudinal edges ot the joint, or the parts can be removed one from the other' by a sliding movement in said longitudinal direction. The disassembly can thus take place without damaging the tangos or the interlocking parts so 'that the joint can be made up again by using these same sections. The arched tormation et the projection contributes to this sliding action of one section relative to the other, because there is substantially but a line contact, and while from the standpoint ot forming a lock this contact is amply su'liicient, it reduces the frictional grip between the parts to a minimum so that one will readily slide in relation to the other.

As above mentioned the return bent portions ot the joint 2, 4 ot Fig. l or 2t, 4L of Fig. 4 are resilient, there being sulli cient spring in the galvanized sheet tor these return bent portions to spring out et position and back again into their original positions when the joint is being assembled.

In making up the parts of the joint the sheets of metal are resquared so that they will have parallel sides while the sheets are in the black, that is, before they are galvanized. Then galvanized the raw edges will be coated along with the rest of the sheet.

Cil

In the forni of the invention shown in Fig. t which is the preferred form, a cleat C is used having its upper portion split and turned in opposite directions as at C1, C2 to hold the sheet metal sections A1 and B1 to the roof. The cap D which provides the covering wall is placed in position by simply pressing it down over the upstanding and return bent portions of the sections A1 B1.

In Fig. 1 the cleat C engages the upstanding portion of section A and astens said section to the roof.

It will be seen from the above that the two embodiments of the invention shown in Figs. l and 4 have features in common in that a spring lock exists between a return bent portion of a section and an overlying or covering wall, said lock consisting of a preformed protuberance upset from and intact and continuous throughout with the said covering wall and presenting` a shoulder to snap under the edge of the return bent portion and without regard to whether the covering wall is in the form of a return bent portion of one of the sections or is a part of a separate cap member.

I claim:

l. A roofing joint comprising a section having an upstanding wall with a return bent portion depending from its upper edge and a covering wall having within its margin a preformed protuberance upset inwardly from its body, the wall of which is intact throughout and continuous with the main body wall and presents a shoulder to snap under and into interlocking engagement with the lower edge of the return bent portion when said covering wall is pressed downwardly relative to said return bent portion, substantially as described.V

2. A roofing joint according to claim l in which the protuberance has an arch shaped wall contacting with the lower edge of the return bent portion substantially with a line Contact.

3. A roofing joint according to claim l in which the protuberance is of arched formation, presenting a substantially right angular shoulder to contact with the return bent portion, the inner end of said protuberance being rounded, substantially as described.

In testimony whereof, I affix my signature.

EBER J. HAYMAN. 

